“The drafts became too alarmist,” said Richard Tol, a Dutch professor of economics at Sussex University in England…

Mr. Tol was part of a team of 70 authors working on revisions to a U.N. report on climate change, to be issued in Japan on March 31. The final draft, which is the copy that Mr. Tol found objectionable, included findings that a warming global temperature will lead to disruption in food supplies and stagnating economies — and that coral reefs and lands in the Arctic may already have suffered irreversible damages…